| 摘要 |
PURPOSE:To cause a pellet grinding surface to be uniformly worn, by obtaining a space between lattice points in the radial direction from a specific expression, in the case of a circular surface plate for diamond, which glues a pellet to the lattice points being the intersection between a concentric circle and a radial line equally dividing its periphery, in a surface lapping device. CONSTITUTION:A lattice pattern is formed by drawing concentric circles 1-6 to be ruled on a surface plate and arranging a pellet in crossing points between the concentric circles and radial lines (a)-(n) by which the surface plate is equally divided, but a space between the concentric circles drawn to be ruled on the surface plate for a diamond pellet in a surface lapping device, that is, a lattice space Pi is obtained as a function of radius ri on the surface plate by using any one of the logical expressions I , II, III, IV because uniform wearing of the pellet can not be expected by geometrically arranging it in a lattice shape on the crossing points. Here the space is shown by the function of the radius ri by showing in the expression the alphabet hri for wearing height of the pellet in a position of the radius ri on the surface plate while the alphabet Lri for a contact distance between the pellet in the same position and a work. Further the alphabet Wri, showing a grinding load received by the pellt in the same position, is shown by the function of the radius ri, and the alphabet Lri is determined by a shape of the work, assignment to a carrier and the radius ri. |
